7 material differences · fewer than 12
Tractor oneAllgaier R181946–1952No measured PTO figureTractor twoSOMECA SOM-20 D1956–1961No measured PTO figure
Which should you choose?
Read our verdict on the R18 and the SOM-20 D → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.
Field by field
7 material differences · 3 fields identical or within 5%, which is not counted as material
| Field | R18 | SOM-20 D | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 17.7 hp | 17.7 hp | — |
| Engine declared | — | FIAT 614.000 | — |
| Displacement declared | — | 1.14 L | — |
| Maximum torque declared | — | 43 lb·ft · 58.8 N·m | — |
| Transmission | |||
| Top speed declared | 11.8 mph · 19 km/h | 13.0 mph · 21 km/h | +11% SOM-20 D |
| Clutch declared | Single dry clutch | Pedal-operated dry FERODO single-plate clutch | differs |
| Hydraulics & hitch | |||
| Pump flow declared | — | 2.0 gpm · 7.5 L/min | — |
| Rear PTO speeds declared | 540 rpm | 540 rpm | — |
| Weight & dimensions | |||
| Unladen weight declared | 3,527 lb · 1,600 kg | 1,874 lb · 850 kg | +88% R18 |
| Wheelbase declared | 59.1 in · 1,500 mm | 66.9 in · 1,700 mm | +13% SOM-20 D |
| Length declared | 102.4 in · 2,600 mm | 102.2 in · 2,595 mm | — |
| Width declared | 58.3 in · 1,480 mm | 47.6–75.2 in · 1,210–1,910 mm | differs |
| Ground clearance declared | 13.8 in · 350 mm | 19.7 in · 500 mm | +43% SOM-20 D |
| Turning radius, braked declared | 8.2 ft · 2.50 m | — | — |
| Fuel tank declared | 29.6 qt · 28 L | 25.4 qt · 24.0 L | +17% R18 |
Height is not in this table. It is not one measurement: the sources measure it to different points — over the cab on some machines, over the steering wheel or the exhaust on others — and the same tractor measured two ways can differ by most of a metre. It appears here only when both machines' figures carry the point they were measured to and it is the same point, which is not the case for these two. Each machine's own page prints its height as its source gives it.
Allgaier R18 sources
- Source: Traktorenlexikon, “Allgaier R18”
SOMECA SOM-20 D sources
- Source: Traktorenlexikon, “Someca SOM 20 D”